president obama's nomination of chuck hagel as secretary f defense have many preparing for difficult hearings. john brennan, nominated for the cia is expected to have an easier time. susan mcginnis starts us off. good morning to you. >> reporter: good morning. yeah, hagel is the tougher sell here on capitol hill. one of the big criticisms is that he is soft on iran. and now we have iran's foreign ministry saying it's hopeful his appointment will improve relations between the two countries. that's probably not going to go over well here where lawmakers and the president are gearing up for a fight. president obama announced his picks for the next heads of the pentagon and the cia. now they need congressional approval before they can get to work. >> we need to get moving quickly on this. >> reporter: senator chuck hagel is nominee for secretary of defense. a former enlisted man and vietnam vet, the president says hagel can relate personallyto america's troops. >> to this day, chuck bears the scars and the shrapnel from battles he fought in our name. >> reporter: but winning confirmation